8I0K | pdb_00008i0k

Cryo-electron microscopic structure of the 2-oxoglutarate dehydrogenase(E1) with TCAIM complex

PDB DOI: https://doi.org/10.2210/pdb8I0K/pdb
EM Map EMD-35042: EMDB EMDataResource

Classification: PROTEIN BINDING
Organism(s): Homo sapiens
Expression System: Escherichia coli
Mutation(s): No

Deposited: 2023-01-11 Released: 2024-05-01
Deposition Author(s): Yu, X., Yang, W., Zhong, Y.H., Ma, X.M., Gao, Y.Z.
Funding Organization(s): National Natural Science Foundation of China (NSFC)

Experimental Data Snapshot

Method: ELECTRON MICROSCOPY
Resolution: 2.86 Å
Aggregation State: PARTICLE
Reconstruction Method: SINGLE PARTICLE

wwPDB Validation 3D Report Full Report

Validation slider image for 8I0K

This is version 1.2 of the entry. See complete history.

Literature

The mitochondrial DNAJC co-chaperone TCAIM reduces alpha-ketoglutarate dehydrogenase protein levels to regulate metabolism

Wang, J., Yu, X., Zhong, Y., Ma, X., Gao, Y., Zhou, D., Wang, J., Fu, Y., Fan, S., Su, J., Huang, M., Haigis, M., Wang, P., Xu, Y., Yang, W.

(2025) Mol Cell 85: 638

DOI: https://doi.org/10.1016/j.molcel.2025.01.006

Macromolecule Content

Total Structure Weight: 243.96 kDa
Atom Count: 16,537
Modeled Residue Count: 2,052
Deposited Residue Count: 2,124
Unique protein chains: 2

Macromolecules

Find similar proteins by:

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
2-oxoglutarate dehydrogenase complex component E1	A, B	911	Homo sapiens	Mutation(s): 0 Gene Names: OGDH EC: 1.2.4.2
UniProt & NIH Common Fund Data Resources
Find proteins for Q02218 (Homo sapiens) Explore Q02218 Go to UniProtKB: Q02218
PHAROS: Q02218 GTEx: ENSG00000105953
Entity Groups
Sequence Clusters	30% Identity 50% Identity 70% Identity 90% Identity 95% Identity 100% Identity
UniProt Group	Q02218
Sequence Annotations Expand
Reference Sequence

Find similar proteins by:

Entity ID: 2
Molecule	Chains	Sequence Length	Organism	Details	Image
T-cell activation inhibitor, mitochondrial	C	302	Homo sapiens	Mutation(s): 0 Gene Names: TCAIM, C3orf23, TOAG1
UniProt & NIH Common Fund Data Resources
Find proteins for Q8N3R3 (Homo sapiens) Explore Q8N3R3 Go to UniProtKB: Q8N3R3
PHAROS: Q8N3R3 GTEx: ENSG00000179152
Entity Groups
Sequence Clusters	30% Identity 50% Identity 70% Identity 90% Identity 95% Identity 100% Identity
UniProt Group	Q8N3R3
Sequence Annotations Expand
Reference Sequence

Small Molecules

Ligands 4 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram	3D Interactions
8EL Query on 8EL Download:Ideal Coordinates CCD File SDF format, chain G [auth B] MOL2 format, chain G [auth B] mmCIF format, chain G [auth B]	G [auth B]	2-[3-[(4-azanyl-2-methyl-pyrimidin-5-yl)methyl]-4-methyl-2H-1,3-thiazol-5-yl]ethyl phosphono hydrogen phosphate C₁₂ H₂₀ N₄ O₇ P₂ S FCUXBJDJFWOWMD-UHFFFAOYSA-N		Interactions Focus chain G [auth B] Interactions & Density Focus chain G [auth B]
TPP (Subject of Investigation/LOI) Query on TPP Download:Ideal Coordinates CCD File SDF format, chain E [auth A] MOL2 format, chain E [auth A] mmCIF format, chain E [auth A]	E [auth A]	THIAMINE DIPHOSPHATE C₁₂ H₁₉ N₄ O₇ P₂ S AYEKOFBPNLCAJY-UHFFFAOYSA-O		Interactions Focus chain E [auth A] Interactions & Density Focus chain E [auth A]
CA (Subject of Investigation/LOI) Query on CA Download:Ideal Coordinates CCD File SDF format, chain H [auth B] MOL2 format, chain H [auth B] mmCIF format, chain H [auth B]	H [auth B]	CALCIUM ION Ca BHPQYMZQTOCNFJ-UHFFFAOYSA-N		Interactions Focus chain H [auth B] Interactions & Density Focus chain H [auth B]
MG (Subject of Investigation/LOI) Query on MG Download:Ideal Coordinates CCD File SDF format, chain D [auth A] SDF format, chain F [auth B] MOL2 format, chain D [auth A] MOL2 format, chain F [auth B] mmCIF format, chain D [auth A] mmCIF format, chain F [auth B]	D [auth A], F [auth B]	MAGNESIUM ION Mg JLVVSXFLKOJNIY-UHFFFAOYSA-N		Interactions Focus chain D [auth A] Focus chain F [auth B] Interactions & Density Focus chain D [auth A] Focus chain F [auth B]

Experimental Data & Validation

Experimental Data

Method: ELECTRON MICROSCOPY
Resolution: 2.86 Å
Aggregation State: PARTICLE
Reconstruction Method: SINGLE PARTICLE

EM Software:

Task	Software Package	Version
MODEL REFINEMENT	PHENIX

Structure Validation

View Full Validation Report

View more in-depth experimental data

Entry History

& Funding Information

Deposition Data

Released Date: 2024-05-01

Deposition Author(s):

Funding Organization	Location	Grant Number
National Natural Science Foundation of China (NSFC)	China	--

Revision History (Full details and data files)

Version 1.0: 2024-05-01
Type: Initial release
Version 1.1: 2025-07-02
Changes: Data collection, Structure summary
Version 1.2: 2025-11-12
Changes: Database references

RCSB PDB is hosted by

RCSB PDB is a member of

RCSB Partners
Nucleic Acid Knowledgebase

CoreTrustSeal

RCSB PDB Core Operations are funded by the U.S. National Science Foundation (DBI-2321666), the US Department of Energy (DE-SC0019749), and the National Cancer Institute, National Institute of Allergy and Infectious Diseases, and National Institute of General Medical Sciences of the National Institutes of Health under grant R01GM157729. RCSB PDB uses resources of the National Energy Research Scientific Computing Center (NERSC), a Department of Energy User Facility.